A5026297939- Atmospheric chemistry and aerosols
- Soil Carbon and Nitrogen Dynamics
- Soil and Water Nutrient Dynamics
- Atmospheric and Environmental Gas Dynamics
- Microbial Community Ecology and Physiology
- Biocrusts and Microbial Ecology
- Air Quality Monitoring and Forecasting
- Wastewater Treatment and Nitrogen Removal
- Atmospheric Ozone and Climate
- Groundwater and Isotope Geochemistry
- Marine and coastal ecosystems
- Aquatic Ecosystems and Phytoplankton Dynamics
- Peatlands and Wetlands Ecology
- Air Quality and Health Impacts
- Coastal wetland ecosystem dynamics
- Isotope Analysis in Ecology
- Marine and environmental studies
- Agriculture, Soil, Plant Science
- Chinese history and philosophy
- Odor and Emission Control Technologies
- Microbial bioremediation and biosurfactants
- Methane Hydrates and Related Phenomena
- Constructed Wetlands for Wastewater Treatment
- Algal biology and biofuel production
- Educational Reforms and Innovations
East China Normal University
2017-2025
Suzhou University of Science and Technology
2025
Chinese Academy of Sciences
2012-2024
Institute of Atmospheric Physics
2022-2024
Carleton University
2024
Ministry of Natural Resources
2023
Center for Agricultural Resources Research
2013-2019
Max Planck Institute for Chemistry
2015-2019
Institute of Genetics and Developmental Biology
2013-2019
Max Planck Institute for Biogeochemistry
2013-2019
From Soil to Sky Trace gases emitted either through the activity of microbial communities or from abiotic reactions in soil influence atmospheric chemistry. In laboratory column experiments using several types, Oswald et al. (p. 1233 ) showed that soils arid regions and farmlands can produce substantial quantities nitric oxide (NO) nitrous acid (HONO). Ammonia-oxidizing bacteria are primary source HONO at comparable levels NO, thus serving as an important reactive nitrogen atmosphere.
Significance Biological soil crusts (biocrusts), occurring on ground surfaces in drylands throughout the world, are among oldest life forms consisting of cyanobacteria, lichens, mosses, and algae plus heterotrophic organisms varying proportions. They prevent erosion nurture ecosystems by fixing carbon nitrogen from atmosphere. Here, we show that fixed is processed within biocrusts, during this metabolic activity, oxide nitrous acid released to Both these gases highly relevant, as they...
Intensive agricultural activities in the North China Plain (NCP) lead to substantial emissions of nitrogen oxides (NOx) from soil, while role this source on local severe ozone pollution is unknown. Here we use a mechanistic parameterization soil NOx combined with two atmospheric chemistry models investigate issue. We find that presence NCP significantly reduces sensitivity anthropogenic emissions. The maximum air quality improvements July 2017, as can be achieved by controlling all domestic...
Abstract Biological soil crusts (biocrusts) cover about 12% of the Earth’s land masses, thereby providing ecosystem services and affecting biogeochemical fluxes on a global scale. They comprise photoautotrophic cyanobacteria, algae, lichens mosses, which grow together with heterotrophic microorganisms, forming model system to study facilitative interactions assembly principles in natural communities. Biocrusts can be classified into cyanobacteria-, lichen-, bryophyte-dominated types, reflect...
Nitrate (NO3−) leaching from nitrogen (N) fertilized soils is a significant global concern, affecting both the environment and public health. However, substantial uncertainties variabilities in NO3− factors (LFs) among regions or crops impede accurate assessments of leaching. Here we synthesize 2500 field observations worldwide show that LFs vary by an order magnitude across crops, primarily driven hydroclimatic edaphic conditions rather than N fertilizer management. Global cropland...
Abstract. Soil and biological soil crusts can emit nitrous acid (HONO) nitric oxide (NO). The terrestrial ground surface in arid semiarid regions is anticipated to play an important role the local atmospheric HONO budget, deemed represent one of unaccounted-for sources frequently observed field studies. In this study NO emissions from a representative variety crust samples Mediterranean island Cyprus were investigated under controlled laboratory conditions. A wide range fluxes was observed,...
Nitrogen lost from fertilized soil is a potentially large source of atmospheric nitrous acid (HONO), major precursor the hydroxyl radical. Yet, impacts fertilizer types and other influencing factors on HONO emissions are unknown. As result, current state-of-the-art models lack an appropriate parameterization scheme to quantify impact air quality after fertilization. Here, we report laboratory measurements high soils at 75-95% water-holding capacity applying three common fertilizers, which...
Summertime surface ozone in China has been increasing since 2013 despite the policy-driven reduction fuel combustion emissions of nitrogen oxides (NOx). Here we examine role soil reactive (Nr, including NOx and nitrous acid (HONO)) 2013-2019 increase over North Plain (NCP), using GEOS-Chem chemical transport model simulations. We update add HONO based on observation-constrained parametrization schemes. The estimates significant daily maximum 8 h average (MDA8) enhancement from Nr 8.0 ppbv...
Asgard archaea are widely distributed in anaerobic environments. Previous studies revealed the potential capability of to utilize various organic substrates including proteins, carbohydrates, fatty acids, amino acids and hydrocarbons, suggesting that play an important role sediment carbon cycling. Here, we describe a previously unrecognized archaeal phylum, Hermodarchaeota, affiliated with superphylum. The genomes these were recovered from metagenomes generated mangrove sediments, found...
Abstract Abiotic and biotic releases of nitrous acid (HONO) from soils contribute substantially to the missing source tropospheric HONO hydroxyl radicals (OH). However, global regional patterns soil emissions are rarely quantified, contributions such atmospheric oxidization capacity unclear. Here, we present that best estimate in 2017 was 9.67 with a range 7.36–11.99 Tg N yr −1 , cropland accounting for ∼79%. The analyses also indicate enhanced ground OH concentrations by 10%–60% ozone...
Abstract Nitrous acid (HONO) is an important precursor of the hydroxyl radical (OH), atmosphere´s primary oxidant. An unknown strong daytime source HONO required to explain measurements in ambient air. Emissions from soils are one potential sources. Ammonia-oxidizing bacteria (AOB) have been identified as possible producers these soil emissions. However, mechanisms for production and release not fully understood. In this study, we used a dynamic soil-chamber system provide direct evidence...
Abstract. Vertical mixing ratio profiles of nitrous acid (HONO) were measured in a clearing and on the forest floor rural environment. For floor, HONO was found to predominantly deposit, whereas for clearing, net deposition dominated only during nighttime emissions observed daytime. selected days, fluxes calculated from using aerodynamic gradient method. The emission range 0.02 0.07 nmol m−2 s−1 thus lower previous observations. These compared strengths postulated sources. Laboratory...